Determining the appropriate value for open_cursors

Is there a way to see what the "high water mark" is for the number of simultaneously open cursors? (Oracle 8.1.7.4, AIX 5.2) I know that I can determine the current value with:

select count(*) from (select distinct address,hash_value from v$open_cursor);

I would like, however, to see the what the maximum was since the last time the database was restarted.

Thanks,
Peter Schauss

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